[RFC PATCH 4/5] app/testpmd: add testpmd command to dump mempool history

[Shani Peretz <shperetz@nvidia.com>]

dumps the mempool object history to console or to a file.

The dump will contain:
- Operation history for each mempool object
- Summary and statistics about all mempool objects

testpmd> dump_mempool_objects_history
testpmd> dump_mempool_objects_history <file_name>

Signed-off-by: Shani Peretz <shperetz@nvidia.com>
---
 app/test-pmd/cmdline.c | 59 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 58 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 7b4e27eddf..3233b9d663 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -296,6 +296,9 @@ static void cmd_help_long_parsed(void *parsed_result,
 			"dump_log_types\n"
 			"    Dumps the log level for all the dpdk modules\n\n"
 
+			"dump_mempool_objects_history\n"
+			"    Dumps the mempool objects history\n\n"
+
 			"show port (port_id) speed_lanes capabilities"
 			"	Show speed lanes capabilities of a port.\n\n"
 		);
@@ -9170,6 +9173,8 @@ static void cmd_dump_parsed(void *parsed_result,
 #endif
 	else if (!strcmp(res->dump, "dump_log_types"))
 		rte_log_dump(stdout);
+	else if (!strcmp(res->dump, "dump_mempool_objects_history"))
+		rte_mempool_objects_dump(stdout);
 }
 
 static cmdline_parse_token_string_t cmd_dump_dump =
@@ -9191,7 +9196,8 @@ cmd_dump_init(void)
 #ifndef RTE_EXEC_ENV_WINDOWS
 		"dump_trace#"
 #endif
-		"dump_log_types";
+		"dump_log_types#"
+		"dump_mempool_objects_history";
 }
 
 static cmdline_parse_inst_t cmd_dump = {
@@ -9253,6 +9259,56 @@ static cmdline_parse_inst_t cmd_dump_one = {
 	},
 };
 
+/* Dump mempool objects history to file */
+struct cmd_dump_to_file_result {
+	cmdline_fixed_string_t dump;
+	cmdline_fixed_string_t file;
+};
+
+static void cmd_dump_to_file_parsed(void *parsed_result, struct cmdline *cl,
+				__rte_unused void *data)
+{
+	struct cmd_dump_to_file_result *res = parsed_result;
+	FILE *file = stdout;
+	char *file_name = res->file;
+
+	if (strcmp(res->dump, "dump_mempool_objects_history")) {
+		cmdline_printf(cl, "Invalid dump type\n");
+		return;
+	}
+
+	if (file_name && strlen(file_name)) {
+		file = fopen(file_name, "w");
+		if (!file) {
+			fprintf(stderr, "Failed to create file %s: %s\n",
+				file_name, strerror(errno));
+			return;
+		}
+	}
+	rte_mempool_objects_dump(file);
+	printf("Flow dump finished\n");
+	if (file_name && strlen(file_name))
+		fclose(file);
+}
+
+static cmdline_parse_token_string_t cmd_dump_to_file_dump =
+	TOKEN_STRING_INITIALIZER(struct cmd_dump_to_file_result, dump,
+				 "dump_mempool_objects_history");
+
+static cmdline_parse_token_string_t cmd_dump_to_file_file =
+	TOKEN_STRING_INITIALIZER(struct cmd_dump_to_file_result, file, NULL);
+
+static cmdline_parse_inst_t cmd_dump_to_file = {
+	.f = cmd_dump_to_file_parsed,  /* function to call */
+	.data = NULL,      /* 2nd arg of func */
+	.help_str = "dump_mempool_objects_history <file_name>: Dump mempool objects history to file",
+	.tokens = {        /* token list, NULL terminated */
+		(void *)&cmd_dump_to_file_dump,
+		(void *)&cmd_dump_to_file_file,
+		NULL,
+	},
+};
+
 /* *** Filters Control *** */
 
 #define IPV4_ADDR_TO_UINT(ip_addr, ip) \
@@ -13992,6 +14048,7 @@ static cmdline_parse_ctx_t builtin_ctx[] = {
 	&cmd_cleanup_txq_mbufs,
 	&cmd_dump,
 	&cmd_dump_one,
+	&cmd_dump_to_file,
 	&cmd_flow,
 	&cmd_show_port_meter_cap,
 	&cmd_add_port_meter_profile_srtcm,
-- 
2.34.1